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Finding the Fourth Proportional to 60,412.70, 90,631.20 and 50,619.80

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Solution

The fourth proportional to 60,412.70, 90,631.20 and 50,619.80 is: 75,939.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,412.70 : 90,631.20 = 50,619.80 : x
  2. Step 2: Convert to fraction form
    60,412.70/90,631.20 = 50,619.80/x
  3. Step 3: Cross multiply
    60,412.70x = 90,631.20 × 50,619.80
  4. Step 4: Simplify right side
    60,412.70x = 4,587,733,217.76
  5. Step 5: Solve for x
    x = 4,587,733,217.76/60,412.70
  6. Step 6: Final answer
    x = 75,939.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.